Arabidopsis Gene Expression Profiles During Recovery Process after Low-temperature Stress Using Microarray

Abstract

Plant responds and adapts to environmental stress at gene expression level as well as physiological level. Genetic and molecular analysis indicates that several signal transduction pathways to control stress-responsive gene expression. We have analyzed gene expression profiles of Arabidopsis during rehydration from dehydration stress using a 7k RAFL-cDNA microarray and identified many rehydration-inducible genes (Plant J, Oono et al. 2003). We think recovery process from abiotic stress also has several pathways like stress response process. In the present study, we present the results of expression profile of low-temperature stress and recovery from cold stress using the 7k RAFL-cDNA microarray and an Agilent 22k oligo-array. We identified many genes that are regulated during recovery process from low-temperature stress. We compared gene expression profiles during recovery process from low-temperature stress with those from drought stress. We will discuss specificity and common processes in the recovery process from cold stress and drought stress.